When the SP3 was announced, I immediately saw this as the device I was waiting for... perfect size, functionality, etc. During the initial demonstrations, I saw how the purple pen tip could call up OneNote and/or set up a screen clip. My initial impression to this? Ho-hum, that seems pretty stupid, but a nice parlor trick. Something that I will never use. So for many days after I received my SP3 I did not even try out this feature. However, when I started to work on a new presentation that required assembling a variety of media into PowerPoint, I thought I would give the Pen Trick a try. Now I am hooked! I use this feature every day. I can't imagine how I got along without it. This was a great idea on the part of the MS engineers and designers. Makes me wonder what other features of this device I have not discovered or used yet..